"The tendency of man is not to reduce himself but to increase his power. To abandon the past to the night of facticity is a way of depopulating the world. I would distrust a humanism which was too indifferent to the efforts of the men of former times; if the disclosure of being achieved by our ancestors does not at all move us, why be so interested in that which is taking place today; why wish so ardently for future realizations? To assert the reign of the human is to acknowledge man in the past as well as in the future."